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. 1993 Jan;19(1):65-71.
doi: 10.1007/BF01233955.

An evaluation of the inactive mouse X chromosome in somatic cell hybrids

E C Salido  1 , M B Passage, P H Yen, L J Shapiro, T K Mohandas
Affiliations

An evaluation of the inactive mouse X chromosome in somatic cell hybrids

E C Salido et al. Somat Cell Mol Genet. 1993 Jan.

Abstract

The expression of mouse Zfx, Rps4, Ube1x, and Xist was evaluated in hamster-mouse somatic cell hybrids containing either an active or an inactive mouse X chromosome using polymerase chain reaction of reverse transcribed RNA (RT-PCR). The results showed that Zfx, Rps4, and Ube1x are expressed exclusively from the active mouse X, while Xist is expressed exclusively from the inactive X. These findings confirm the pattern of X inactivation for these mouse genes reported previously based on expression in somatic tissues of F1 females from interspecific crosses. These results demonstrate the existence of differences between human and mouse X inactivation, as the corresponding human genes, ZFX, RPS4X, and UBE1 escape X inactivation.

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